How does Yu Qian's Lime Kiln express the poet's feelings?

Lyrics of Lime is a poem by Yu Qian, a national hero and politician in Ming Dynasty. This poem is famous because it reflects the poet's noble sentiments of honesty and integrity. The author uses lime as a metaphor to express his loyalty to the country, his willingness not to be afraid of sacrifice and his determination to stick to noble sentiments. The value of this poem lies in the metaphor of lime everywhere. Lyme is sung to praise his open mind and noble personality. Express yourself like lime, not afraid of difficulties.